Income Taxes Income Taxes (Tax Cuts and Jobs Act) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Reduction to Regulatory Liability due to return of unprotected excess ADIT	$ 53	$ 88
Entergy Arkansas [Member]
Net Regulatory Liabilities for Income Taxes	435	432
Protected Excess ADIT	453	463
Unprotected Excess Accumulated Deferred Income Taxes	27	12
Reduction to Regulatory Liability due to return of unprotected excess ADIT	0	8
Entergy Louisiana [Member]
Net Regulatory Liabilities for Income Taxes	338	338
Protected Excess ADIT	675	669
Unprotected Excess Accumulated Deferred Income Taxes	135	148
Reduction to Regulatory Liability due to return of unprotected excess ADIT	25	33
Entergy Mississippi [Member]
Net Regulatory Liabilities for Income Taxes	202	212
Protected Excess ADIT	226	237
Entergy New Orleans [Member]
Net Regulatory Liabilities for Income Taxes	40	42
Protected Excess ADIT	53	56
Reduction to Regulatory Liability due to return of unprotected excess ADIT	1	1
Entergy Texas [Member]
Net Regulatory Liabilities for Income Taxes	133	171
Protected Excess ADIT	201	208
Unprotected Excess Accumulated Deferred Income Taxes	0	26
Reduction to Regulatory Liability due to return of unprotected excess ADIT	27	28
System Energy [Member]
Net Regulatory Liabilities for Income Taxes	111	113
Protected Excess ADIT	137	148
Reduction to Regulatory Liability due to return of unprotected excess ADIT	$ 0	$ 18